package org.hqs.gateway;

import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.HttpStatus;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.http.server.reactive.ServerHttpResponseDecorator;
import org.springframework.stereotype.Component;
import org.springframework.util.MultiValueMap;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;

import java.net.InetSocketAddress;
import java.net.URI;


// @Order(-1)
@Component
public class AuthorizeFilter implements GlobalFilter, Ordered {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        System.out.println("进入AuthorizeFilter一次");
        // 1.获取请求参数
        ServerHttpRequest request = exchange.getRequest();
        MultiValueMap<String, String> params = request.getQueryParams();
        HttpHeaders headers = request.getHeaders();

//        String token = exchange.getRequest().getHeaders().getFirst("Authorization");
//        System.out.println("进入过滤器一次token = " + token);

        InetSocketAddress remoteAddress = request.getRemoteAddress();
        System.out.println("远程访问地址是"+ remoteAddress.toString());
        URI uri = request.getURI();
        System.out.println("访问的目的地址是" + uri);
        HttpMethod method = request.getMethod();
        System.out.println("访问的方法是" + method);



        // 2.获取参数中的 authorization 参数
//        String auth = params.getFirst("authorization");
//        // 3.判断参数值是否等于 admin
//        if ("admin".equals(auth)) {
//            // 4.是，放行
//            return chain.filter(exchange);
//        }
//        // 5.否，拦截
//        // 5.1.设置状态码
//        exchange.getResponse().setStatusCode(HttpStatus.UNAUTHORIZED);
//        // 5.2.拦截请求
//        return exchange.getResponse().setComplete();

        return chain.filter(exchange);
    }
    
    @Override
    public int getOrder() {
        return -1;
    }
}
